M500 and ThinkPad T420 problem

I recently purchased a Crucial M500 240GB SSD on Newegg to upgrade my Lenovo ThinkPad T420 and after installation I saw the device finein the BIOS. I rebooted the machine to run an overnight memory test and then the next morning I stopped the test rebooted and gotthe dreaded "2100: Detection error on HDD0 (Main HDD)" error.

After Googling it seems that this is a common problem with ThinkPads and various SSD's it also appears that there is no known solutionother than changing to another drive. This message seems to be unique to SSDs only - I have never experienced this error with aspinning drive.

The M500 has been updated to the latest firmware MU05 and I have verified that the drive is firmly in the drive bay. If I change theSATA mode in the BIOS to Compatibility mode I can see the SSD in the recognized devices but in AHCI mode the error message returns.

Re: M500 and ThinkPad T420 problem

Hi Paul,

I am sorry for the issues that you have been experiencing with your drive. There should be no differences between your drive and drives purchased from other retailers. At this point I would recommend contacting us directly using the information in my signature so we may troubleshoot it a bit more intensively.